CVE-2020-27128 : Security Advisory and Response
Learn about CVE-2020-27128, a vulnerability in Cisco SD-WAN vManage Software that allows remote attackers to write arbitrary files to affected systems. Find out the impact, technical details, and mitigation steps.
A vulnerability in the application data endpoints of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to write arbitrary files to an affected system due to improper validation of requests to APIs.
Understanding CVE-2020-27128
This CVE involves a security flaw in Cisco SD-WAN vManage Software that could be exploited by an attacker to write files to a targeted system.
What is CVE-2020-27128?
The vulnerability in Cisco SD-WAN vManage Software allows a remote attacker to write arbitrary files to the system by sending malicious requests to APIs within the application.
The Impact of CVE-2020-27128
- CVSS Base Score: 6.5 (Medium Severity)
- Attack Vector: Network
- Integrity Impact: High
- Successful exploitation could lead to directory traversal attacks and unauthorized file writing on the system.
Technical Details of CVE-2020-27128
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The vulnerability arises from improper validation of requests to APIs in Cisco SD-WAN vManage Software, enabling attackers to write files to the system.
Affected Systems and Versions
- Affected Product: Cisco SD-WAN vManage
- Affected Version: n/a
Exploitation Mechanism
Attackers exploit this vulnerability by sending malicious requests to APIs within the affected application, allowing them to write files to any location on the system.
Mitigation and Prevention
Protecting systems from CVE-2020-27128 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply vendor-provided patches or updates promptly.
- Monitor network traffic for any suspicious activity.
- Restrict access to the affected system.
Long-Term Security Practices
- Regularly update and patch software to prevent vulnerabilities.
- Implement network segmentation to limit the impact of potential attacks.
- Conduct security training for employees to recognize and report suspicious activities.
- Employ intrusion detection and prevention systems.
Patching and Updates
Ensure that the latest patches and updates from Cisco are applied to mitigate the vulnerability.